CN112397355B

CN112397355B - Electric switchgear

Info

Publication number: CN112397355B
Application number: CN202010801797.0A
Authority: CN
Inventors: 施政
Original assignee: Jiangsu Luokai Mechanical & Electrical Co ltd; Shanghai Liangcheng Electromechanical Technology Co ltd
Current assignee: Jiangsu Luokai Mechanical & Electrical Co ltd; Shanghai Liangcheng Electromechanical Technology Co ltd
Priority date: 2019-08-15
Filing date: 2020-08-11
Publication date: 2025-04-18
Anticipated expiration: 2040-08-11
Also published as: WO2021027909A1; US11876355B2; JP2022551221A; KR20220066054A; US20220173580A1; CN212750765U; CN112397355A; EP4016579A1; EP4016579A4; JP7562638B2

Abstract

The present invention discloses an electric switch device, comprising: a drawer device, an electrical connection device, a driving mechanism and a locking mechanism. The driving mechanism drives the circuit breaker body to move, and the relative positions of the circuit breaker body and the drawer device include: a separation position, a test position, a connection unclamped position and a connection clamped position. In the separation position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body cannot be closed. In the test position, the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body can be closed. In the connection unclamped position, the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker body cannot be closed. In the connection clamped position, the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device clamps the busbar, and the circuit breaker body can be closed.

Description

Electrical switching apparatus

Technical Field

The present invention relates to the field of electrical devices, and more particularly to electrical switching devices of the draw-out type.

Background

The electric switching device generally has a draw-out structure, and the common electric switching device comprises a universal circuit breaker, a molded case circuit breaker, an automatic transfer switch with a drawer device, a medium voltage circuit breaker, a medium voltage switch cabinet and the like. The draw-out structure device comprises a body and a drawer device. The main body is provided with a bridge type contact as a main body busbar, and the drawer device is provided with a contact bridge for realizing electric connection with the main body busbar. The contact bridge on the drawer device is connected with the external wire inlet and outlet end. When the body is pushed into the drawer device, the body busbar is contacted with the contact bridge to form a conductive path, and the body is communicated with an external wire inlet and outlet end. When the body is pulled out of the drawer device, the main body busbar is separated from the contact bridge, and the conductive path is cut off, so that isolation is realized, and the testing or maintenance is facilitated. The main body busbar and the contact bridge form an electric connection device of the electrical device with the extraction type structure. In some products, the bridge type contact is arranged on the extraction type device and the contact bridge is arranged on the body, but the configuration is still that the busbar and the contact bridge form the electrical connection device of the electrical device with the extraction type structure, and the basic principle is the same as the structure.

In the patent application publication No. CN111403939A, CN111403938a and the patent publication No. CN211017487U, CN211045800U, which have been filed by the applicant of the present application, the drawbacks of the electrical connection device used in the prior art are introduced, and a new structure of the electrical connection device is proposed. The novel structure of the electric connection device separates the insertion and withdrawal process from the clamping process, reduces the operation difficulty, ensures the clamping force and the contact area of the electric connection, and effectively improves the electric performance of the electric connection.

Because the structure of the novel electric connecting device is obviously different from that of the traditional electric connecting device, the electric switching device using the novel electric connecting device needs to be matched with a corresponding driving operation mechanism.

Disclosure of Invention

According to one embodiment of the present invention, an electrical switching apparatus is provided that includes a drawer apparatus, an electrical connection apparatus, a drive mechanism, and a locking mechanism. The breaker body enters or exits the drawer arrangement. The electric connecting device is arranged on the drawer device and is provided with a clamping mechanism, and the electric connecting device is communicated with the busbar of the circuit breaker body and an external circuit. The drive mechanism drives the breaker body to move so that the busbar of the breaker body enters the area of the electrical connection device or leaves. The locking mechanism drives the clamping mechanism of the electric connection device, so that the electric connection device clamps or loosens the busbar of the circuit breaker body. The driving mechanism drives the breaker body to move, and the relative positions of the breaker body and the drawer device comprise a separation position, a test position, a connection unclamped position and a connection clamped position. And in the separation position, the busbar of the breaker body is separated from the electric connection device, and the breaker body cannot be closed. And the busbar of the breaker body is separated from the electric connection device at the test position, and the breaker body can be switched on. And the busbar of the breaker body is contacted with the electric connecting device at the position of being connected with the unclamped position, the electric connecting device does not clamp the busbar, and the breaker body cannot be closed. And the busbar of the breaker body is contacted with the electric connecting device at the connecting and clamping position, the electric connecting device clamps the busbar, and the breaker body can be switched on.

In one embodiment, a drive mechanism is mounted on the drawer arrangement, the drive mechanism including a drive shaft, a slide plate, a spindle, and a carrier plate. One end of the driving shaft is connected with the handle, and the rotating handle drives the driving shaft to rotate. The sliding plate is arranged on the driving shaft, the rotation of the driving shaft is converted into the sliding of the sliding plate, the driving shaft drives the sliding plate to move, and the sliding plate moves towards the inner side or the outer side of the drawer device to drive the circuit breaker body to enter or exit the drawer device. The main shaft is installed on drawer device, and the main shaft cooperates with the sliding plate, and the sliding plate moves to separation position, test position, connection unclamping position and connection clamping position, and the main shaft rotates to separation angle, test angle, connection unclamping angle and connection clamping angle respectively. The supporting plate is arranged on the drawer device, the supporting plate drives the breaker body to move, the supporting plate is matched with the main shaft, the main shaft rotates to a separation angle, a test angle, a connection unclamping angle and a connection clamping angle, and the supporting plate drives the breaker body to a separation position, a test position, a connection unclamping position and a connection clamping position.

In one embodiment, the sliding plate has a first driving groove, a second driving groove, an unlocking groove and an interlocking groove thereon. The spindle is provided with a first cantilever having a bifurcated first drive rod and an interlock rod and a second cantilever having a bifurcated second drive rod and an interlock rod. Wherein the first drive slot and the interlock slot form a drive coupling with a first drive rod and an interlock rod on the first cantilever, and the second drive slot and the interlock slot form a drive coupling with a second drive rod and an interlock rod on the second cantilever.

In one embodiment, the circuit breaker body enters the drawer arrangement, passing through the separation position, the test position, the connection unclamped position and the connection clamped position in sequence;

in the separation position, the main shaft is positioned at a separation angle, the first driving rod is positioned in the first driving groove, the second driving rod is positioned in the second driving groove, the unlocking rod and the unlocking groove are not in action, and the interlocking rod and the interlocking groove are not in action;

Moving from the separation position to the testing position, the sliding plate moves towards the inner side of the drawer device, the outer side end of the first driving groove pushes the first driving rod, the outer side end of the second driving groove pushes the second driving rod, so that the main shaft rotates to a test angle, the unlocking rod does not act with the unlocking groove, and the interlocking rod does not act with the interlocking groove;

The test position is moved to a connecting unclamped position, the sliding plate moves towards the inner side of the drawer device, the outer side end of the first driving groove pushes the first driving rod until the first driving rod is separated from the first driving groove, the outer side end of the second driving groove pushes the second driving rod until the second driving rod is separated from the second driving groove, so that the main shaft rotates to a connecting unclamped angle, the unlocking rod enters the unlocking groove but the unlocking rod does not act with the unlocking groove, and the interlocking rod does not act with the interlocking groove;

Moving from the connection unclamped position to the connection clamped position, the sliding plate moves towards the inner side of the drawer device, and the outer side end of the unlocking groove pushes the unlocking rod to enable the main shaft to rotate to the connection clamped angle, and the interlocking rod enters the interlocking groove but does not act with the interlocking groove.

In one embodiment, the circuit breaker body exits the drawer arrangement sequentially through a connected clamped position, a connected undamped position, a test position, and a disconnected position;

In the connecting and clamping position, the main shaft is positioned at a connecting and clamping angle, the interlocking rod is positioned in the interlocking groove, the unlocking rod is positioned in the unlocking groove, the first driving rod and the first driving groove are not used, and the second driving rod and the second driving groove are not used;

The sliding plate moves towards the outer side of the drawer device from the connecting clamping position to the connecting unclamping position, the inner side end of the interlocking groove pushes the interlocking rod until the interlocking rod is separated from the interlocking groove, so that the main shaft rotates to the connecting unclamping angle, the unlocking rod is positioned in the unlocking groove but is not acted by the unlocking rod, the first driving rod is not acted by the first driving groove, and the second driving rod is not acted by the second driving groove;

The sliding plate moves towards the outer side of the drawer device from the connection unclamped position to the test position, the inner side end of the unlocking groove pushes the unlocking rod to enable the spindle to rotate towards the test angle from the connection unclamped angle, the first driving rod enters the first driving groove, the second driving rod enters the second driving groove, the inner side end of the unlocking groove pushes the unlocking rod until the unlocking rod is separated from the unlocking groove, the inner side end of the first driving groove continues pushing the first driving rod, and the inner side end of the second driving groove continues pushing the second driving rod to enable the spindle to rotate to the test angle;

From the test position to the separation position, the sliding plate moves towards the outer side of the drawer device, the inner side end of the first driving groove pushes the first driving rod, the inner side end of the second driving groove pushes the second driving rod, so that the main shaft rotates to the separation angle, the first driving rod is kept in the first driving groove, and the second driving rod is kept in the second driving groove.

In one embodiment, the two ends of the main shaft are provided with transmission gears, the bottom of the supporting plate is round and provided with transmission teeth, the transmission teeth are meshed with the transmission gears, and the main shaft rotates to drive the supporting plate to rotate. The inside wall of layer board extends to the top and forms the interlocking board, and the inboard end at the top of layer board forms the drive recess, and the outside end at the top of layer board forms the junction surface, and the top of the lateral wall of layer board is the lobe, forms and withdraws from drive part.

In one embodiment, the circuit breaker further comprises a side sliding plate, wherein the side sliding plate is provided with an entering shaft pin and an exiting shaft pin, the circuit breaker body is arranged on the side sliding plate, the entering shaft pin is positioned at the inner side, the exiting shaft pin is positioned at the outer side, and the circuit breaker body enters the drawer device and sequentially passes through a separation position, a test position, a connection unclamped position and a connection clamping position;

in the separating position, the main shaft is positioned at a separating angle, the supporting plate is also positioned at the separating angle, the entering shaft pin of the side sliding plate is positioned in the driving groove, and the breaker body is positioned at the separating position;

The main shaft rotates from a separation angle to a test angle to drive the supporting plate to rotate from the separation angle to the test angle, the outer side end of the driving groove pushes the entering shaft pin of the side sliding plate to drive the breaker body to move from the separation position to the test position;

The main shaft rotates from a test angle to a connection unclamped position, the supporting plate is driven to rotate from the test angle to the connection unclamped angle, the outer side end of the driving groove pushes the entering shaft pin of the side sliding plate until the entering shaft pin is separated from the driving groove and stays on the connection surface of the supporting plate, and the breaker body is driven to move from the test position to the connection unclamped position;

the main shaft rotates from the connection unclamped position to the connection clamped position, the supporting plate is driven to rotate from the connection unclamped angle to the connection clamped angle, the entering shaft pin slides on the connection surface of the supporting plate, the supporting plate and the entering shaft pin do not act, and the breaker body does not move.

In the connecting and clamping position, the main shaft is positioned at a connecting and clamping angle, the supporting plate is positioned at the connecting and clamping angle, the entering shaft pin of the side sliding plate is positioned on the connecting surface of the supporting plate, and the exiting shaft pin of the side sliding plate is not contacted with the supporting plate;

The main shaft rotates from a connecting clamping angle to a connecting unclamping angle to drive the supporting plate to rotate from the connecting clamping angle to the connecting unclamping angle, the entering shaft pin slides on the connecting surface of the supporting plate, the entering shaft pin and the exiting shaft pin do not act, and the breaker body does not move;

from the connection unclamped position to the test position, the main shaft rotates from the connection unclamped angle to the test angle, the supporting plate is driven to rotate from the connection unclamped angle to the test angle, the withdrawing driving part of the supporting plate pushes the withdrawing shaft pin, so that the breaker body moves outwards, the entering shaft pin enters the driving groove from the connection surface of the supporting plate, the withdrawing shaft pin is separated from the supporting plate, and the inner side end of the driving groove pushes the entering shaft pin, so that the breaker body continues to move outwards to the test position;

from the test position to the separation position, the main shaft rotates from the test angle to the separation angle, the supporting plate is driven to rotate from the test angle to the separation angle, and the inner side end of the driving groove pushes the entering shaft pin, so that the breaker body moves to the separation position to the outer side.

In one embodiment, the electrical switching apparatus further includes an interlock mechanism that cooperates with the trip bar of the circuit breaker body to permit or prevent closing of the circuit breaker body, the interlock mechanism being mounted on the drawer apparatus, the interlock mechanism including a drawer interlock, a drawer push rod, and an interlock plate. The drawer interlocking piece is arranged on the drawer device, the drawer interlocking piece is close to the outer side of the drawer device, the outer side end and the inner side end of the drawer interlocking piece form protruding interlocking parts, and the middle of the drawer interlocking piece forms recessed release parts. The drawer push rod is arranged on the drawer device, the drawer push rod is positioned on the inner side of the drawer interlocking piece, the middle part of the drawer push rod is rotationally connected to the drawer device through a rotating shaft, the top of the drawer push rod is a horizontal interlocking rod, the bottom of the drawer push rod is a tilting trigger rod, the drawer push rod is provided with an interlocking position and a release position, the interlocking rod is pressed downwards at the interlocking position, the interlocking rod is lifted upwards at the release position, the drawer push rod is provided with a push rod spring, and the spring force of the push rod spring enables the drawer push rod to rotate towards the release position. The interlocking plate is formed by extending the inner side wall of the supporting plate to the top.

In one embodiment, the circuit breaker body is provided with a trip bar, the trip bar is locked, the circuit breaker body cannot be closed, the trip bar is released, the circuit breaker body can be closed, the circuit breaker body enters the drawer device, and the circuit breaker body sequentially passes through a separation position, a test position, a connection unclamped position and a connection clamped position;

in the separation position, the interlocking part at the outer side end of the drawer interlocking piece locks the tripping rod, and the breaker body cannot be closed;

the circuit breaker body moves inwards from the separation position to the test position, the tripping rod enters a concave release part in the middle of the drawer interlocking piece, the tripping rod is released, and the circuit breaker body can be switched on;

The circuit breaker body moves from the test position to the connection unclamped position, the tripping rod is separated from the release part of the drawer interlocking piece and locked by the interlocking part at the inner side end of the drawer interlocking piece, the circuit breaker body cannot be closed, the circuit breaker body continues to move inwards, the interlocking plate rotates along with the supporting plate and contacts with the trigger rod of the drawer push rod, the drawer push rod rotates from the release position to the interlocking position, the tripping rod is separated from the drawer interlocking piece but is continuously locked by the interlocking rod of the drawer push rod, and the circuit breaker body cannot be closed;

The circuit breaker body does not move from the connection unclamped position to the connection clamped position, the interlocking plate rotates along with the supporting plate and is separated from the trigger rod of the drawer push rod, the drawer push rod rotates from the interlocking position to the release position under the action of the push rod spring, the interlocking rod of the drawer push rod releases the trip rod, and the circuit breaker body can be switched on.

In the connecting and clamping position, the drawer push rod is positioned at a releasing position under the action of the push rod spring, the tripping rod is released, and the breaker body can be switched on;

The circuit breaker body does not move from the connecting clamping position to the connecting unclamping position, the interlocking plate rotates along with the supporting plate and contacts with the trigger rod of the drawer push rod, the drawer push rod rotates from the releasing position to the interlocking position under the action of the interlocking plate, the interlocking rod of the drawer push rod locks the tripping rod, and the circuit breaker body cannot be closed;

From the connection unclamped position to the test position, the breaker body moves outwards, the trip bar is separated from the interlocking bar of the drawer push rod but is continuously locked by the interlocking part at the inner side end of the drawer interlocking piece, the breaker body cannot be closed, the breaker body moves to the test position, the trip bar enters the concave release part in the middle of the drawer interlocking piece, the trip bar is released, and the breaker body can be closed;

From the test position to the separation position, the breaker body moves outwards, the tripping rod is separated from the release part of the drawer interlocking piece and is locked by the interlocking part at the outer side end of the drawer interlocking piece, and the breaker body cannot be closed.

In one embodiment, the drive mechanism drives the locking mechanism such that the locking mechanism drives the clamping mechanism of the electrical connection device, which clamps or releases the busbar of the circuit breaker body, the locking mechanism being mounted on the drawer device, the locking mechanism comprising a locking gear, a locking drive shaft and a locking rack. The locking gear is arranged on the drawer device and can rotate. The locking transmission shaft is connected with the locking gear and the clamping mechanism of the electric connecting device, the locking gear rotates, and the locking transmission shaft drives the clamping mechanism to clamp or loosen the busbar of the breaker body. A locking rack is formed on the sliding plate, the locking rack extending from an inner end of the sliding plate toward an outer side. The sliding plate moves inwards, the locking rack is contacted with and meshed with the locking gear, the locking gear is driven to rotate in the clamping direction, and the clamping mechanism clamps the busbar of the circuit breaker body. The sliding plate moves outwards to drive the locking gear to rotate in a loosening direction, the clamping mechanism loosens the busbar of the circuit breaker body, the sliding plate continues to move outwards, and the locking rack is separated from the locking gear.

in the separation position and the test position, the locking gear is separated from the locking rack;

The test position is moved to a connecting unclamped position, the sliding plate and the breaker body are moved inwards, the busbar of the breaker body gradually enters the electric connecting device, the locking rack is contacted and meshed with the locking gear, the locking gear is driven to rotate in the clamping direction, and the clamping mechanism gradually clamps the locking gear;

From connecting the unclamping position and moving to connecting the clamping position, the circuit breaker body does not move, and the busbar of circuit breaker body gets into electric connecting device completely, and the sliding plate continues to move to the inboard, locking rack and locking gear interlock drive locking gear and continue according to the clamping direction rotation, clamping mechanism presss from both sides the busbar of circuit breaker body.

The circuit breaker body does not move from the connecting clamping position to the connecting unclamping position, the sliding plate moves outwards, the locking rack is meshed with the locking gear, the locking gear is driven to rotate in a loosening direction, and the clamping mechanism loosens the busbar of the circuit breaker body;

From the unclamped position to the test position, the sliding plate and the circuit breaker body move outwards, the busbar of the circuit breaker body gradually withdraws from the electric connection device, the locking rack is meshed with the locking gear, the locking gear is driven to rotate continuously in the loosening direction, the clamping mechanism is continuously loosened, the sliding plate and the circuit breaker body move outwards to the test position, the busbar of the circuit breaker body is separated from the electric connection device, and the locking rack is separated from the locking gear;

From the test position to the disengaged position, the locking gear disengages from the locking rack.

moving from the test position to the connection unclamped position, moving the sliding plate and the breaker body inwards, gradually entering the electric connection device by the busbar of the breaker body, and separating the locking rack from the locking gear;

From connecting the unclamped position and moving to connecting the clamping position, the circuit breaker body does not move, and the busbar of circuit breaker body gets into electric connecting device completely, and the sliding plate continues to move to the inboard, and locking rack and locking gear contact and interlock drive locking gear and rotate according to the clamping direction, and clamping mechanism presss from both sides the busbar of circuit breaker body.

the circuit breaker body does not move from the connecting clamping position to the connecting unclamping position, the sliding plate moves outwards, the locking rack is meshed with the locking gear to drive the locking gear to rotate in a loosening direction, the clamping mechanism loosens the busbar of the circuit breaker body, the sliding plate moves outwards to the connecting unclamping position, and the locking rack is separated from the locking gear;

The sliding plate and the breaker body move outwards from the unclamped position to the test position, the busbar of the breaker body gradually withdraws from the electric connection device, and the locking rack is separated from the locking gear;

The electric switching device provided by the invention has the advantages that the electric connecting device with a novel structure can be used for configuring large clamping force to clamp the main body busbar according to the requirement, so that the overall contact resistance of the electric device is greatly reduced, the power consumption is greatly reduced especially in long-term use, the use cost is greatly saved, and the higher the rated current of the electric device is, the more remarkable the advantage is. On the other hand, the reduction of contact resistance reduces the temperature rise of the product, reduces the heating of the electrical device, does not need to consider a large heat dissipation space, is powerful in reducing the size of the product, and improves the reliability of long-term use. The electric switching device provided by the invention is provided with the drawer device, the driving mechanism, the locking mechanism and the interlocking mechanism which are matched with the electric connecting device, and the electric switching device has four working positions of a separation position, a test position, a connection unclamped position and a connection clamped position by combining the characteristics of the electric connecting device, so that the operability and the safety of the electric switching device are ensured. On the other hand, the busbar of the circuit breaker body enters the electric connecting device and the electric contact clamping between the busbar of the circuit breaker body is divided into two processes of connecting unclamping and connecting clamping, the operating force of the movement of the circuit breaker body and the clamping force of the electric connecting device are not influenced mutually, the operating force of the whole process that the circuit breaker body enters the drawer device is greatly reduced, and the two forces do not need to be mutually compromised.

Drawings

The above and other features, properties and advantages of the present invention will become more apparent from the following description of embodiments taken in conjunction with the accompanying drawings in which like reference characters designate like features throughout the drawings, and in which:

Fig. 1a and 1b disclose a structural view of an electrical switching apparatus according to an embodiment of the present invention, wherein fig. 1a discloses a state in which a circuit breaker body has not been entered into a drawer apparatus, and fig. 1b discloses a state in which the circuit breaker body has been entered into the drawer apparatus.

Fig. 2a, 2b, 2c and 2d disclose a structural view of a driving mechanism in an electrical switching apparatus according to an embodiment of the present invention.

Fig. 3 discloses a block diagram of a locking mechanism in an electrical switching apparatus according to one embodiment of the present invention.

Fig. 4 discloses a structural view of a drawer interlock of an interlock mechanism in an electric switching apparatus according to an embodiment of the present invention.

Fig. 5 discloses an overall structure of an electrical switching apparatus according to an embodiment of the present invention.

Fig. 6 discloses a side view of the electrical switching apparatus in a separated position according to an embodiment of the present invention.

Fig. 7a and 7b disclose a block diagram of the drive mechanism of the electrical switching apparatus in a separated position according to an embodiment of the present invention.

Fig. 8 discloses a side view of a structure of an electrical switching apparatus in a test position according to an embodiment of the present invention.

Fig. 9a and 9b disclose a block diagram of the drive mechanism of the electrical switching apparatus in a test position according to an embodiment of the present invention.

Fig. 10 discloses a side view of an electrical switching apparatus in a connected undamped position according to one embodiment of the present invention.

Fig. 11a and 11b disclose a block diagram of the drive mechanism of the electrical switching apparatus in the connected undamped position according to an embodiment of the present invention.

Fig. 12 discloses a side view of the electrical switching apparatus in a connection clamping position, according to an embodiment of the present invention.

Fig. 13a and 13b disclose a block diagram of the drive mechanism of the electrical switching apparatus in the connection clamping position according to an embodiment of the present invention.

Fig. 14a, 14b, 14c and 14d disclose the mating relationship of the slide plate and spindle in different positions.

Detailed Description

Fig. 1a and 1b disclose a block diagram of an electrical switching apparatus according to an embodiment of the present application. The electrical switching apparatus includes a drawer apparatus 101, an electrical connection apparatus 102, a drive mechanism 103, a locking mechanism 104, and an interlock mechanism. The breaker body 105 enters or exits the drawer 101. The electrical connection device 102 is mounted on the drawer device 101, the electrical connection device 102 having a clamping mechanism, the electrical connection device 102 communicating the busbar 151 of the circuit breaker body 105 with an external circuit. The driving mechanism 103 is mounted on the drawer device 101, and the driving mechanism 103 drives the breaker body 105 to move, so that the busbar 151 of the breaker body enters or leaves the area where the electrical connection device 102 is located. The locking mechanism 104 is mounted on the drawer 101, and the locking mechanism 104 drives the clamping mechanism of the electrical connection device 102 such that the electrical connection device 102 clamps or unclamps the busbar 151 of the circuit breaker body. The interlocking mechanism is mounted on the drawer arrangement, and is not shown in fig. 1a and 1b, but will be shown in the following figures. The interlocking mechanism is matched with the tripping rod of the breaker body to allow or prevent the breaker body from being closed. In comparison with the prior art electrical switching apparatus, the electrical switching apparatus of the present application employs an electrical connection apparatus 102 of a different structure, and the applicant of the present application has filed a patent application publication No. CN111403939A, CN111403938a, and a patent publication No. CN211017487U, CN211045800U, which are incorporated herein by reference, with respect to the specific structure of the electrical connection apparatus 102, reference is made to the above-mentioned patent application, and the present application is not repeated. Because the structure and the working process of the electric connection device are different from those of the prior art, the driving mechanism, the locking mechanism and the interlocking mechanism of the electric switch device are correspondingly changed to adapt to the structural change of the electric connection device. The electrical switching apparatus of the present application differs from prior art electrical switching apparatus, in its entirety, most significantly in that the electrical switching apparatus of the present application has four positions, a disconnected position, a test position, a connected unclamped position, and a connected clamped position. In the prior art, the busbar is synchronously completed in place and clamped in the process of inserting the busbar into the electric connecting device, so that the electric switching device has only three positions, namely a separation position, a test position and a connection position. In the prior art, the circuit breaker body is brought into a connection position, and the busbar is inserted into the electrical connection device and clamped. In the electrical switching apparatus of the present application, the entry of the busbar into the electrical connection means and the clamping thereof are performed separately, so that in the connected state there are two positions, a connection unclamped position and a connection clamped position. Although the electric switch device of the application has four positions, the basic principle in the process of connecting the breaker body with the drawer device still needs to be satisfied, namely safety is ensured by limiting the closing function of the breaker body, namely the driving mechanism drives the breaker body to move, and the relative positions of the breaker body and the drawer device comprise:

The disconnecting position is where the busbar of the breaker body is disconnected from the electric connecting device, and the breaker body cannot be closed;

the test position is where the busbar of the breaker body is separated from the electric connection device, and the breaker body can be switched on;

The busbar of the breaker body is contacted with the electric connecting device at the unclamped position, the electric connecting device does not clamp the busbar, and the breaker body cannot be closed;

and the connecting clamping position is at which the busbar of the circuit breaker body is contacted with the electric connecting device, the electric connecting device clamps the busbar, and the circuit breaker body can be switched on.

The structure of the driving mechanism, the locking mechanism and the interlocking mechanism in the electric switching apparatus of the present invention will be described below.

Fig. 2a, 2b, 2c and 2d disclose a structural view of a driving mechanism in an electrical switching apparatus according to an embodiment of the present invention. Wherein fig. 2a discloses the structure of the sliding plate, fig. 2b discloses the structure of the spindle, fig. 2c discloses the structure of the pallet, and fig. 2d discloses the structure of the assembled driving mechanism. In one embodiment, the drive mechanism includes a drive shaft 201, a slide plate 202, a main shaft 203, and a pallet 204. One end of the driving shaft 201 is connected to a handle (handle is not shown in the figure), and the driving shaft 201 is rotated by rotating the handle. The slide plate 202 is mounted on the drive shaft 201, and rotation of the drive shaft 201 is converted into sliding of the slide plate 202. The sliding plate 202 is driven to move by swinging the handle to drive the driving shaft 210 to rotate, and the sliding plate 202 moves towards the inner side or the outer side of the drawer device 101 to drive the breaker body 105 to enter or exit the drawer device 101. The manner in which the drive shaft is connected to the slide plate is a conventional handle rocker structure, which is conventional in the art and will not be described in detail herein. In addition, for the sake of clarity and unity of description, the direction in which the drawer device is far from the breaker body is defined as "outside" and the direction in which the drawer device is close to the breaker body is defined as "inside". The inward movement means movement toward the inside of the drawer device, the outward movement means movement toward the opening of the drawer device, the inward end means one end close to the inner side, and the outward end means one end close to the outer side. The main shaft 203 is mounted on the drawer device 101, and the main shaft 203 is rotatable and cooperates with the slide plate 202. The slide plate 202 is moved to the separation position, the test position, the connection unclamping position, and the connection clamping position, and the main shaft 203 is correspondingly rotated to the separation angle, the test angle, the connection unclamping angle, and the connection clamping angle. The tray 204 is mounted on the drawer apparatus 101, and the tray 204 can rotate. Breaker body 105 is mounted on a pallet 204, pallet 204 being mated with main shaft 203. The main shaft 203 rotates to the separation angle, the test angle, the connection unclamping angle, and the connection clamping angle, and the pallet 204 correspondingly rotates to the separation angle, the test angle, the connection unclamping angle, and the connection clamping angle, and drives the breaker body 105 to the separation position, the test position, the connection unclamping position, and the connection clamping position.

As shown in fig. 2a, 2b and 2d, the sliding plate 202 has a first driving groove 221, a second driving groove 222, an unlocking groove 223 and an interlocking groove 224. The main shaft 203 is mounted with a first cantilever 231 and a second cantilever 232. The first cantilever 231 has a bifurcated first driving rod 233 and an interlock rod 234, and the second cantilever 232 has a bifurcated second driving rod 235 and an interlock rod 236. As shown, the first driving groove 221 and the interlocking groove 224 are aligned in a straight line, and the first driving groove 221 and the interlocking groove 224 are in driving coupling with the first driving lever 233 and the interlocking lever 234 on the first cantilever. The opening angle of the first driving lever 233 and the interlock lever 234 from the first cantilever 231 matches the interval of the first driving groove 221 and the interlock groove 224. In operation, the first driving lever 233 is engaged with the first driving groove 221, and the interlock lever 234 is engaged with the interlock groove 224. The second driving groove 222 and the unlocking groove 223 are also aligned, and the second driving groove 222 and the unlocking groove 223 are in driving coupling with the second driving rod 235 and the unlocking rod 236 on the second cantilever. The opening angle of the second driving lever 235 and the unlocking lever 236 from the second cantilever 232 matches the interval of the second driving groove 222 and the unlocking groove 223. In operation, the second drive lever 235 engages the second drive slot 222 and the unlocking lever 236 engages the unlocking slot 223. In the illustrated embodiment, the slide plate 202 also has a guide slot 225 thereon, the guide slot 225 guiding as the slide plate moves, the slide plate 202 moving along the guide slot 225.

As shown in fig. 2b, 2c and 2d, the transmission gears 237 are installed at both ends of the main shaft 203. The bottom of the supporting plate 204 is circular and is provided with a transmission tooth 241, the transmission tooth 241 is meshed with the transmission gear 237, and the main shaft 203 rotates to drive the supporting plate 204 to rotate. Since the main shaft 203 and the pallet 204 are driven by way of gear engagement, the rotational directions of the main shaft 203 and the pallet 204 are opposite. Referring to fig. 2c, the inner sidewall of the pallet 204 extends to the top to form an interlocking plate 242, the inner end of the top of the pallet forms a driving groove 243, the outer end of the top of the pallet forms a connecting surface 244, and the top of the outer sidewall of the pallet is convex to form an exit driving part 245.

Fig. 3 discloses a block diagram of a locking mechanism in an electrical switching apparatus according to one embodiment of the present invention. The driving mechanism drives the locking mechanism so that the locking mechanism drives the clamping mechanism of the electric connection device, and the electric connection device clamps or loosens the busbar of the circuit breaker body. Referring to fig. 3, the locking mechanism includes a locking gear 301, a locking transmission shaft 302, and a locking rack 303. The locking gear 301 is installed on the drawer device, and the locking gear 301 can rotate. The locking drive shaft 302 connects the locking gear 301 with the clamping mechanism of the electrical connection device 102. In the illustrated embodiment, the locking drive shaft 302 is coaxial with the locking gear 301, and the locking drive shaft 302 and the locking gear 301 rotate in synchronization. The locking gear 301 rotates, the locking transmission shaft 302 rotates along with the locking gear 301, the locking transmission shaft 302 is connected to the clamping mechanism of the electric connection device, and the locking transmission shaft 302 drives the clamping mechanism to clamp or loosen the busbar of the circuit breaker body. The structure of the clamping mechanism of the electrical connection device to clamp or unclamp the circuit breaker busbar is described in patent applications such as CN111403939A, CN111403938A, CN211017487U, CN 211045800U. A lock rack 303 is formed on the slide plate 202, the lock rack 303 extending from the inner side end of the slide plate 202 toward the outer side. The sliding plate moves inwards, the locking rack 303 contacts and is meshed with the locking gear 301, the locking gear is driven to rotate in the clamping direction, and the locking transmission shaft 302 drives the clamping mechanism to clamp the busbar of the circuit breaker body. The sliding plate moves outwards to drive the locking gear 301 to rotate in a loosening direction, and the locking transmission shaft 302 drives the clamping mechanism to loosen the busbar of the breaker body. The slide plate 202 continues to move outwards, and since the position of the locking gear 301 is fixed, after the slide plate 202 moves outwards a sufficient distance, the locking rack 303 is disengaged from the locking gear 301, the locking gear 301 is no longer rotated, and the clamping mechanism of the electrical connection device is no longer activated. In one embodiment, the locking rack and the locking gear may also be configured to always be in a snap-in form, in correspondence with which the electrical connection device has a sufficiently large clamping stroke to meet the need for the electrical connection device to freewheel when the busbar has not been inserted into the electrical connection device in the separated and test positions. Specifically, after the sliding plate 202 is moved to the outside, the locking rack 303 and the locking gear 301 may still be in contact engagement, in which embodiment the clamping stroke of the electrical connection device 102 is required to be large enough, and during the movement of the sliding plate in the separation position and the test position, the electrical connection device 102 is idle clamped but still has a sufficient space, so that the breaker body busbar 151 is not subjected to clamping force during entering the electrical connection device 102. An advantage of this embodiment is that the locking rack 303 remains engaged with the locking gear 301 such that the entire system is always coupled, avoiding the effect of re-engagement due to assembly clearances between components. Such an embodiment has a more stable performance.

The interlock mechanism includes a drawer interlock 401, a drawer pushrod 402, and an interlock plate 242. Fig. 4 discloses a structural view of a drawer interlock of an interlock mechanism in an electric switching apparatus according to an embodiment of the present invention. The drawer interlock 401 is mounted on the drawer apparatus, and the drawer interlock 401 is mounted at a position close to the outside of the drawer apparatus 101. Referring to fig. 4, the outside and inside ends of the drawer interlocking member 401 are formed with protruding interlocking portions 411 and 412, respectively, and the middle of the drawer interlocking member is formed with a recessed release portion 413. Referring to fig. 5, fig. 5 discloses an overall block diagram of an electrical switching apparatus according to an embodiment of the present invention. The drawer push rod 402 is installed on the drawer device, the drawer push rod 402 is located at the inner side of the drawer interlocking member 401, and the middle part of the drawer push rod 402 is rotatably connected to the drawer device through a rotating shaft. The top of the drawer push rod is a horizontal interlocking rod 421, the bottom of the drawer push rod is an inclined triggering rod 422, and the drawer push rod has an interlocking position and a release position. The interlock lever 421 is depressed downward, and the interlock lever 421 is lifted upward in the release position, and the drawer push lever has a push lever spring (not shown in the drawings) whose spring force rotates the drawer push lever toward the release position. The interlock plate 242 is formed by extending the inner side wall of the pallet 204 toward the top, and the interlock plate 242 is shown with reference to fig. 2 c.

Fig. 5 discloses an overall structure of an electrical switching apparatus according to an embodiment of the present invention. Fig. 5 shows the drawer arrangement and the breaker body with the drawer arrangement and the breaker body removed, and more clearly shows the structure of the electrical connection means 102, the drive mechanism, the locking mechanism and the interlocking mechanism. The locking gear and locking drive shaft in the locking mechanism are not shown in fig. 5 due to the angular relationship, but the locking rack at the inner end of the slide plate is clearly visible. The assembled drive shaft 201, slide plate 202, main shaft 203 and pallet 204 are visible in fig. 5. In the embodiment shown in fig. 5, the driving mechanism further includes a side sled 205, the side sled 205 having an entry pin 251 and an exit pin 252 thereon, and the circuit breaker body is mounted on the side sled 205. The entry pin 251 and the exit pin 252 of the side slide 205 cooperate with the pallet 204 to drive the breaker body into or out of the drawer device. In fig. 5, the drawer interlocking member 401 and the drawer push rod 402 are shown in positions, the drawer interlocking member 401 and the drawer push rod 402 are matched with a tripping rod 501 on the breaker body, and the tripping rod 501 determines whether the breaker body can be closed or not. The trip bar 501 is locked, the breaker body cannot be closed, the trip bar 501 is released, and the breaker body can be closed.

The states of the breaker body and the drawer device at four relative positions are described below. In the process that the breaker body enters the drawer device, the breaker body can sequentially pass through a separation position, a test position, a connection unclamped position and a connection clamped position.

First is the separation position. The requirement in the disconnected position is that the busbar of the circuit breaker body is disconnected from the electrical connection device and the circuit breaker body cannot be closed. Fig. 6 discloses a side view of the electrical switching apparatus in a separated position according to an embodiment of the present invention. Fig. 7a and 7b disclose a block diagram of the drive mechanism of the electrical switching apparatus in a separated position according to an embodiment of the present invention. As shown in fig. 7a and 7b, in the disengaged position, the main shaft 203 is at the disengaged angle, the first drive rod 233 is positioned in the first drive slot 221, and the second drive rod 235 is positioned in the second drive slot 222. The unlocking lever 236 and the unlocking groove 223 are not operated and the interlocking lever 234 and the interlocking groove 224 are not operated. In connection with fig. 6, 7a and 7b, in the separated position, the spindle 203 is positioned at a separation angle and the pallet 204 is also positioned at the separation angle. The entry pin 251 of the side sled 205 is located in the drive recess 243 of the tray 204. The breaker body placed on the side sled is in the disconnected position. In the separated position, the interlocking part 411 of the outer end of the drawer interlocking member 401 presses and locks the trip bar 501 so that the circuit breaker body cannot be closed. In the disengaged position, the locking gear is disengaged from the locking rack, and therefore the locking mechanism does not act. As previously described, in the event that the electrical connection has a sufficiently large clamping stroke, the locking rack and the locking gear can also be configured in a constantly engaged manner in some embodiments.

Then the test position. The requirement in the test position is that the busbar of the breaker body is separated from the electrical connection device, but the breaker body can be switched on. The test position is mainly used for testing the operation function of the electric switch device on the breaker body and testing the operation of closing and opening the brake, so that the breaker body is required to be capable of performing the operation of closing and opening the brake at the test position. However, the test position is only for the test of the operating function of the breaker body, which has not yet been connected into the main circuit, so that the busbar of the breaker body is still separated from the electrical connection device. Fig. 8 discloses a side view of a structure of an electrical switching apparatus in a test position according to an embodiment of the present invention. Fig. 9a and 9b disclose a block diagram of the drive mechanism of the electrical switching apparatus in a test position according to an embodiment of the present invention. As shown in fig. 9a and 9b, in moving from the separated position to the testing position, the slide plate 202 moves toward the inside of the drawer apparatus along the guide groove 225 by the driving shaft 201, the outer end of the first driving groove 221 pushes the first driving lever 233, and the outer end of the second driving groove 222 pushes the second driving lever 235. Because the first cantilever 231 and the second cantilever 232 are fixed on the main shaft, the first driving rod and the second driving rod move under the pushing of the first driving groove and the second driving groove, and drive the first cantilever and the second cantilever to move, and drive the main shaft 203 to rotate, so that the main shaft 203 rotates from the separation angle to the test angle. In this process, the unlocking lever and the unlocking groove are not acted, and the interlocking lever and the interlocking groove are also not acted. Referring to fig. 8, 9a and 9b, the spindle 203 is rotated from the separation angle to the test angle by moving from the separation position to the test position, and the pallet 204 engaged with the spindle by the transmission gear 237 is also rotated from the separation angle to the test angle. Since the pallet 204 is engaged with the spindle 203 by a gear, the rotational directions of the pallet and the spindle are opposite, and when the spindle is rotated clockwise, the pallet is rotated counterclockwise. When the main shaft rotates anticlockwise, the supporting plate rotates along the pointer. The outboard end of the drive recess 243 of the pallet pushes the entry pin 251 of the side sled 205. The pallet rotates from the separation angle to the test angle, driving the breaker body to move from the separation position to the test position by the side sled 205. During the movement from the release position to the test position, the circuit breaker body moves inward, and the trip bar 501 also moves inward into the recessed release 413 in the middle of the drawer interlock 401. The release portion 413 is recessed inward, so that the trip bar 501 is released, and the circuit breaker body can perform a closing operation, thereby meeting the requirement of a test position. In the test position, the locking gear is still disengaged from the locking rack, so that the locking mechanism does not act. As previously described, in the event that the electrical connection has a sufficiently large clamping stroke, the locking rack and the locking gear can also be configured in a constantly engaged manner in some embodiments.

The following is the connection unclamped position. The requirement for the connection at the unclamped position is that the busbar of the circuit breaker body is in contact with the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker body cannot be closed. From the test position into the connection unclamped position, the busbar of the circuit breaker body begins to enter the area of the electrical connection device. However, the main circuit needs to remain open until the busbar is fully inserted into the electrical connection and clamped, so that the breaker body cannot be closed during this process. Fig. 10 discloses a side view of an electrical switching apparatus in a connected undamped position according to one embodiment of the present invention. Fig. 11a and 11b disclose a block diagram of the drive mechanism of the electrical switching apparatus in the connected undamped position according to an embodiment of the present invention. As shown in fig. 11a and 11b, the sliding plate 202 continues to move towards the inside of the drawer arrangement along the guide groove 225 under the influence of the drive shaft 201 during the movement from the test position to the connected undamped position. The outer end of the first driving groove 221 pushes the first driving lever 233 until the first driving lever 233 is out of the first driving groove 221 (refer to fig. 11 b). The outer end of the second driving groove 222 pushes the second driving rod 235 until the second driving rod 235 is out of the second driving groove 222 (refer to fig. 11 b). This is done by rotating the spindle 203 to a connection unclamped angle. The first drive bar and the second drive bar at the connecting unclamped angle have been disengaged from the first drive slot and the second drive slot. Interlock lever 234 has not yet entered interlock slot 224. While the unlocking lever 236 enters the unlocking groove 223, the unlocking groove 223 is a relatively long groove, so that the unlocking lever 236 and the unlocking groove 223 do not function in this position. Then, after reaching the connection unclamped position, there is temporarily no interaction between the slide plate and the spindle. Referring to fig. 10, 11a and 11b, the spindle 203 is rotated from the test angle to the unclamped angle by moving from the test position to the unclamped position, and the pallet 204 engaged with the spindle by the transmission gear 237 is also rotated from the test angle to the unclamped angle. In this process, the outer end of the driving groove 243 pushes the entry shaft pin 251 of the side sled 205, driving the breaker body to move from the test position to the connection unclamped position through the side sled 205. When both the main shaft and the pallet are rotated to the connection unclamped angle, the side sled and the breaker body also reach the connection unclamped position, and the entry pin 251 is disengaged from the drive recess 243 and rests on the connection face 244 of the pallet 204. The connection surface 244 is a continuous arc surface so that when the entry pin 251 is positioned on the connection surface 244, continued rotation of the blade 204 does not push the connection pin 251 any more, that is, the blade 204 continues to rotate and the positions of the side slide and the breaker body are no longer moved. In the process of moving from the test position to the connection unclamped position, the breaker body moves inward, the trip bar 501 is disengaged from the release portion 413 of the drawer interlocking member 401 and is pressed and locked again by the interlocking portion 412 at the inner end of the drawer interlocking member, so that the breaker body cannot be closed. The breaker body continues to move inward and the interlock plate 242 on the blade 204 rotates with the blade and contacts the trigger lever 422 of the drawer push 402. Under the action of the interlock plate 242, the drawer push rod 402 rotates from the release position to the interlock position against the spring force of the push rod spring, and the interlock lever 421 of the drawer push rod 402 is pressed downward. After the trip bar 501 moves inward following the circuit breaker body and is separated from the drawer interlocking member 401, the trip bar 501 continues to be pressed and locked by the interlocking bar 421 of the drawer push rod 402, and the circuit breaker body still maintains a state of being unable to be closed. In the process of moving from the test position to the connection unclamped position, the locking mechanism has two modes, namely, in the first mode, in the process of moving from the test position to the connection unclamped position, the sliding plate 202 and the circuit breaker body move inwards, the busbar of the circuit breaker body gradually enters the electric connection device 102, the locking rack 303 is meshed with the locking gear 301, the locking rack synchronously drives the locking gear to rotate in the clamping direction along with the movement of the sliding plate, and the clamping mechanism of the electric connection device 102 starts to gradually clamp the busbar of the circuit breaker body. In the first mode, the length of the locking rack 303 is longer, extending a longer distance from the inner end of the sliding plate, and after the sliding plate passes the test position, the locking rack starts to engage with the locking gear, and the action of the busbar of the circuit breaker body entering the electrical connection device and the clamping of the busbar by the electrical connection device is synchronized. In the second mode, the sliding plate and the breaker body are moved inward from the test position to the connection unclamped position, and the busbar of the breaker body is gradually put into the electrical connection device, but the locking rack and the locking gear remain disengaged. In the second mode, the locking rack 303 is of a short length and extends a relatively short distance from the inside end of the slide plate, the locking rack and locking gear being always separated before the slide plate reaches the connection unclamped position, the entry of the busbar of the circuit breaker body into the electrical connection means and the clamping of the busbar by the electrical connection means being separated. As previously described, in the event that the electrical connection has a sufficiently large clamping stroke, the locking rack and the locking gear can also be configured in a constantly engaged manner in some embodiments.

Finally, the connection clamping position. The requirement at the connecting and clamping position is that the busbar of the circuit breaker body is contacted with the electric connecting device, the electric connecting device clamps the busbar, and the circuit breaker body can be switched on. The connecting and clamping position is the normal use position, the busbar of the circuit breaker body is fully contacted with the electric connecting device and clamped, and the circuit breaker body is connected into the main loop and works normally, so that the circuit breaker body can be switched on at the connecting and clamping position. Fig. 12 discloses a side view of the electrical switching apparatus in a connection clamping position, according to an embodiment of the present invention. Fig. 13a and 13b disclose a block diagram of the drive mechanism of the electrical switching apparatus in the connection clamping position according to an embodiment of the present invention. As shown in fig. 13a and 13b, moving from the coupled unclamped position to the coupled clamped position, the sliding plate 202 continues to move toward the inside of the drawer device along the guide groove 225 under the action of the driving shaft 201. At this time, the unlocking lever 236 is located in the unlocking slot 223, and since the unlocking slot 223 is a relatively long slot, before the outer end of the unlocking slot 223 contacts the unlocking lever 236, there is no interaction between the sliding plate 202 and the main shaft 203, and at this time, the main function of the sliding plate to move further inwards is to make the locking rack 303 provided at the inner end of the sliding plate drive the locking gear to rotate, so that the electrical connection device clamps the busbar of the breaker body. After locking in place, the slide plate 202 is moved to the connection clamping position, where the outboard end of the unlocking slot 223 contacts and pushes the unlocking lever 236 so that the spindle 203 rotates to the connection clamping angle. At this time, when the spindle is rotated to the coupling clamping angle, the interlock lever 234 enters the interlock slot 224, but the interlock lever 234 does not function with the interlock slot 224. The interlocking bar 234 enters the interlocking slot 224 so that the breaker body can be re-locked from closing by using the interlocking bar 234 and the interlocking slot 224 when the breaker body is withdrawn. Referring to fig. 12, 13a and 13b, after moving from the unclamped position to the clamped position, the spindle 203 is rotated from the unclamped angle to the clamped angle, and the pallet 204 engaged with the spindle by the transmission gear 237 is also rotated from the unclamped angle to the clamped angle. During this process, the entry pin 251 of the side sled 205 slides over the connection face 244 of the pallet 204, there is no interaction between the pallet 204 and the entry pin 251, and therefore neither the side sled nor the breaker body is moved in position. During movement from the undamped to the clamped position, the blade 204 rotates from the clamped to the clamped position, and the interlock plate 242 rotates with the blade 204 and disengages the trigger lever 422 of the drawer push 402, although no longer acting with the side slide. At this time, the drawer push rod 402 rotates again from the interlocking position to the release position under the action of the push rod spring, the trip lever 501 is released by the interlock lever 421 of the drawer push rod 402, and the circuit breaker body can be closed. With the locking mechanism, whichever of the modes described above (long locking rack or short locking rack) is used, the locking rack will engage the locking gear during movement from the attached unclamped position to the attached clamped position. In this process, the breaker body does not move, the busbar of the breaker body completely enters the electrical connection device, the sliding plate 202 continues to move inwards, the locking rack 303 is meshed with the locking gear, the locking gear is driven to rotate continuously in the clamping direction, and the clamping mechanism clamps the busbar of the breaker body.

Fig. 14a, 14b, 14c and 14d disclose the mating relationship of the slide plate and spindle in different positions. The mating process of the first driving groove 221, the second driving groove 222, the unlocking groove 223, and the interlocking groove 224 on the sliding plate 202 with the first driving lever 233, the interlocking lever 234, the second driving lever 235, and the unlocking lever 236 on the first cantilever 231, the second cantilever 232 of the main shaft during the advancing process of the circuit breaker body is further illustrated. In the disengaged position, referring to fig. 14a, the spindle is at the disengaged angle, the first drive rod is in the first drive slot (the first drive rod and the first drive slot are obscured in fig. 14a due to the angular relationship), the second drive rod 235 is in the second drive slot 222, the unlocking rod 236 is disengaged and deactivated from the unlocking slot 223, and the interlock rod 234 is disengaged and deactivated from the interlock slot 224. From the separated position to the testing position, the slide plate 202 moves toward the inside of the drawer device as shown with reference to fig. 14b, and the direction indicated by the arrow in fig. 14a, 14b, 14c, and 14d is the moving direction of the slide plate 202. The outer end of the first drive slot pushes the first drive rod (the first drive rod and the first drive slot are hidden in fig. 14b due to the angular relationship), and the outer end of the second drive slot 222 pushes the second drive rod 235 such that the spindle rotates to the test angle, the unlocking rod 236 does not interact with the unlocking slot 223, and the interlocking rod 234 does not interact with the interlocking slot 224. Moving from the test position to the connected undamped position, referring to fig. 14c, the slide plate 202 continues to move toward the inside of the drawer arrangement, with the outside end of the first drive slot pushing the first drive rod until the first drive rod exits the first drive slot (the first drive rod and the first drive slot being obscured in fig. 14c due to the angular relationship), and with the outside end of the second drive slot 222 pushing the second drive rod 235 until the second drive rod exits the second drive slot. So that the main shaft rotates to the connection unclamped angle. At this time, the unlocking lever 236 enters the unlocking groove 223, but the unlocking groove 223 is a relatively long groove, so that the unlocking lever 236 does not act with the unlocking groove 223, and the interlocking lever 234 does not act with the interlocking groove 224 because the interlocking lever 234 does not enter the interlocking groove 224 yet. Moving from the connection unclamped position to the connection clamped position, referring to fig. 14d, the slide plate 202 continues to move toward the inside of the drawer device, the outside of the unlocking slot 223 contacts the unlocking lever 236 and pushes the unlocking lever 236 so that the spindle rotates to the connection clamped angle. When the spindle is rotated to the connection clamping angle, the interlock rod 234 enters the interlock slot 224 but the interlock rod 234 does not interact with the interlock slot 224. The entry of the interlock lever 234 into the interlock slot 224 is to allow the inner end of the interlock slot 224 to act on the interlock lever 234 when the trip lever is withdrawn such that the trip bar of the circuit breaker body is locked from closing.

The process of withdrawing the breaker body from the drawer device is opposite to the process, and the breaker body sequentially passes through a connection clamping position, a connection unclamping position, a test position and a separation position.

In the connection clamping position, reference is made to fig. 12, 13a and 13b. The spindle 203 is positioned at the connection clamping angle, the interlock lever 234 is positioned in the interlock slot 224, the unlock lever 236 is positioned in the unlock slot 223, the first drive lever is inactive with the first drive slot, and the second drive lever is inactive with the second drive slot. In the connection clamping position, the spindle 203 is at the connection clamping angle, the pallet 204 is likewise at the connection clamping angle, the entry pin 251 of the side sled 205 is located on the connection face 244 of the pallet 204, and the exit pin 252 of the side sled 205 is also out of contact with the pallet 204. In the connection clamping position, the interlock plate 242 is separated from the trigger lever 422 of the drawer push rod 402, the drawer push rod 402 is located at the release position under the action of the push rod spring, the interlock lever 421 is lifted upwards, the trip lever 501 is released, and the circuit breaker body can be closed.

Moving from the connection clamping position to the connection unclamping position, see fig. 10, 11a and 11b. The sliding plate 202 moves toward the outside of the drawer device along the guide groove 225 by the driving shaft 201, and the inner side end of the interlocking groove 224 pushes the interlocking lever 234 until the interlocking lever 234 is separated from the interlocking groove 224, so that the main shaft 203 is rotated to be coupled at an unclamped angle. The unlocking lever 236 is only located in the unlocking groove 223 before the spindle is rotated to the coupling unclamped angle, but the unlocking lever 236 does not act with the unlocking groove 223. The first driving rod and the first driving groove are not in action, and the second driving rod and the second driving groove are not in action. Moving from the joint clamping position to the joint unclamping position, the spindle 203 rotates from the joint clamping angle to the joint unclamping angle, and the pallet 204 engaged with the spindle by the transmission gear 237 is also driven to rotate from the joint clamping angle to the joint unclamping angle. The entry pin 251 slides on the connection surface 244 of the pallet 204, the exit pin 252 is not yet in contact with the pallet 204, the pallet 204 is not in action with the entry pin 251 and the exit pin 252, and neither the side sled 205 nor the breaker body is moved. Moving from the connected clamped position to the connected unclamped position, the side slide and the circuit breaker body, although not moving, the interlock plate 242 rotates with the pallet 204 and contacts the trigger lever 422 of the drawer push rod 402, the drawer push rod 402 rotates from the released position to the interlocked position against the spring force of the push rod spring under the action of the interlock plate 242, the interlock lever 421 of the drawer push rod 402 depresses and locks the trip lever 501, and the circuit breaker body cannot be closed. From connecting the clamping position and moving to connecting the unclamping position, side slide and circuit breaker body do not move, and the slide plate moves to the outside, locking rack 303 and locking gear interlock, locking rack 303 drive locking gear rotate according to loosening direction for clamping mechanism loosens the female row of circuit breaker body. In the mode using a shorter locking rack (corresponding to the second mode described above), the locking rack disengages from the locking gear when the connection unclamped position is reached, the action of the electrical connection means releasing the busbar and the busbar of the circuit breaker body exiting the electrical connection means being performed separately. In the mode of using a longer locking rack (corresponding to the first mode described above), the locking rack still engages with the locking gear without disengaging when the connection unclamped position is reached, the action of releasing the busbar by the electrical connection device and of withdrawing the busbar of the circuit breaker body from the electrical connection device being synchronized. As previously described, in the event that the electrical connection has a sufficiently large clamping stroke, the locking rack and the locking gear can also be configured in a constantly engaged manner in some embodiments. If in a form of constant engagement, the locking rack is not disengaged from the locking gear.

From the connected undamped position to the test position, reference is made to fig. 8, 9a and 9b. The slide plate 202 moves toward the outside of the drawer device along the guide groove 225 by the driving shaft 201, and the inner side end of the unlocking groove 223 pushes the unlocking lever 236, so that the main shaft 203 rotates from the coupled unclamped angle to the test angle. In this process, the first driving lever 233 is entered into the first driving groove 221, and the second driving lever 235 is entered into the second driving groove 222. The inner end of the unlocking groove 223 continuously pushes the unlocking rod 236 until the unlocking rod 236 is released from the unlocking groove 223, and then the inner end of the first driving groove 221 continuously pushes the first driving rod 233, and the inner end of the second driving groove 222 continuously pushes the second driving rod 235, so that the main shaft 203 continuously rotates until the main shaft rotates to a test angle. From the joint unclamped position to the test position, the spindle 203 is rotated from the joint unclamped angle to the test angle, and the pallet 204 engaged with the spindle by the transmission gear 237 is also driven to rotate from the joint unclamped angle to the test angle. The withdrawing driving part 245 of the supporting plate 204 contacts and pushes the withdrawing shaft pin 252 so that the side sliding plate 205 drives the circuit breaker body to move outward while the entering shaft pin 251 enters the driving groove 243 from the connection surface of the supporting plate. The pallet 204 continues to rotate, the withdrawing shaft pin 252 is separated from the withdrawing driving part 245 of the pallet, and then the inner side end of the driving groove 243 of the pallet pushes the entering shaft pin 251, so that the side sliding plate 205 drives the breaker body to move outwards to the test position. In another embodiment, the exit pin 252 may be pushed all the way by the exit drive 245 until the test position, without the entry pin 251 participating in the exit process. In the process of connecting the unclamped position to the test position, the circuit breaker body moves to the outside, and the trip lever 501 is separated from the interlock lever 421 of the drawer push rod 402 but continues to be pushed down and locked by the interlock portion 413 of the inner side end of the drawer interlock 401, so that the circuit breaker body cannot be closed. The circuit breaker body is moved to the test position, the trip bar 501 enters the recessed release 413 in the middle of the drawer interlock 401, the trip bar 501 is released, and the circuit breaker body can be closed. From the connection unclamped position to the test position, the sliding plate and the breaker body are moved outwards, and the busbar of the breaker body is gradually withdrawn from the electrical connection device. Under the mode of using longer locking rack (corresponding to the first mode), locking rack still bites with the locking gear, drives the locking gear and continues to rotate according to the direction of loosening, and clamping mechanism continues to loosen, and the sliding plate and the circuit breaker body move to the test position to the outside, and the female row of circuit breaker body separates with electric connection device, and locking rack breaks away from with the locking gear. In the mode using a shorter locking rack (corresponding to the second mode described above), the locking rack and the locking gear have been disengaged in the connected unclamped position, and from the connected unclamped position to the test position, the sliding plate and the circuit breaker body are moved to the outside, and the busbar of the circuit breaker body is gradually withdrawn from the electrical connection device. As previously described, in the event that the electrical connection has a sufficiently large clamping stroke, the locking rack and the locking gear can also be configured in a constantly engaged manner in some embodiments. If in a form of constant engagement, the locking rack is not disengaged from the locking gear.

From the test position to the separation position, reference is made to fig. 6, 7a and 7b. The sliding plate 202 moves toward the outside of the drawer apparatus along the guide groove 225 by the driving shaft 201, the inner side end of the first driving groove 221 pushes the first driving lever 233, and the inner side end of the second driving groove 222 pushes the second driving lever 235, so that the main shaft rotates to the separation angle, the first driving lever 233 is held in the first driving groove 221, and the second driving lever 235 is held in the second driving groove 222, ready for the next entering process. From the test position to the separation position, the main shaft is rotated from the test angle to the separation angle, and the pallet 204 engaged with the main shaft by the transmission gear 237 is also driven to rotate from the test angle to the separation angle, and the inner end of the driving groove 243 is pushed into the shaft pin 251, so that the side sliding plate 205 and the breaker body are moved to the separation position to the outside. In another embodiment, the exit pin 252 may be pushed all the way by the exit drive 245 until the exit position, without the entry pin 251 participating in the exit process. From the test position to the release position, the circuit breaker body moves to the outside, the trip lever 501 is disengaged from the release portion 413 of the drawer interlocking member 401, and is locked by the interlocking portion 411 at the outer end of the drawer interlocking member, and the circuit breaker body cannot be closed. From the test position to the separation position, the locking gear is separated from the locking rack, and the locking mechanism does not act. As previously described, in the event that the electrical connection has a sufficiently large clamping stroke, the locking rack and the locking gear can also be configured in a constantly engaged manner in some embodiments. If in a form of constant engagement, the locking rack is not disengaged from the locking gear.

The embodiments described above are intended to provide those skilled in the art with a full range of modifications and variations to the embodiments described above without departing from the inventive concept thereof, and therefore the scope of the invention is not limited by the embodiments described above, but is to be accorded the broadest scope consistent with the innovative features recited in the claims.

Claims

1. An electric switch device, comprising:

Drawer device, the circuit breaker body enters or exits the drawer device;

An electrical connection device, which is mounted on the drawer device and has a clamping mechanism, and which connects the busbar of the circuit breaker body with an external circuit;

A driving mechanism, the driving mechanism drives the circuit breaker body to move so that the busbar of the circuit breaker body enters or leaves the area of the electrical connection device;

A locking mechanism, which drives a clamping mechanism of the electrical connection device so that the electrical connection device clamps or releases the busbar of the circuit breaker body;

Wherein, the driving mechanism drives the circuit breaker body to move, and the relative position of the circuit breaker body and the drawer device includes:

Separation position, in which the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body cannot be closed;

Test position, in which the busbar of the circuit breaker body is separated from the electrical connection device, and the circuit breaker body can be closed;

The connection is in the unclamped position. In the unclamped position, the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device does not clamp the busbar, and the circuit breaker body cannot be closed;

The connection clamping position, in which the busbar of the circuit breaker body contacts the electrical connection device, the electrical connection device clamps the busbar, and the circuit breaker body can be closed.

The driving mechanism is installed on the drawer device, and the driving mechanism includes:

A driving shaft, one end of which is connected to a handle, and the driving shaft is rotated by turning the handle;

A sliding plate is installed on the driving shaft. The rotation of the driving shaft is converted into the sliding of the sliding plate. The driving shaft drives the sliding plate to move. The sliding plate moves toward the inside or outside of the drawer device, driving the circuit breaker body to enter or exit the drawer device.

The main shaft is installed on the drawer device, the main shaft cooperates with the sliding plate, the sliding plate moves to the separation position, the test position, the connection unclamping position and the connection clamping position, and the main shaft rotates to the separation angle, the test angle, the connection unclamping angle and the connection clamping angle accordingly;

The pallet is installed on the drawer device, and the pallet drives the circuit breaker body to move. The pallet cooperates with the main shaft, and the main shaft rotates to the separation angle, the test angle, the connection unclamping angle and the connection clamping angle. The pallet drives the circuit breaker body to the separation position, the test position, the connection unclamping position and the connection clamping position;

The sliding plate is provided with a first driving slot, a second driving slot, an unlocking slot and an interlocking slot;

The main shaft is provided with a first cantilever and a second cantilever, the first cantilever having a forked first driving rod and an interlocking rod, and the second cantilever having a forked second driving rod and an unlocking rod;

The first driving groove and the interlocking groove form a driving coupling with the first driving rod and the interlocking rod on the first cantilever, and the second driving groove and the unlocking groove form a driving coupling with the second driving rod and the unlocking rod on the second cantilever; the circuit breaker body enters the drawer device and passes through the separation position, the test position, the connection unclamped position and the connection clamped position in sequence;

In the separation position, the main shaft is at the separation angle, the first driving rod is located in the first driving groove, the second driving rod is located in the second driving groove, the unlocking rod and the unlocking groove do not interact, and the interlocking rod and the interlocking groove do not interact;

Move from the separation position to the test position, the sliding plate moves toward the inner side of the drawer device, the outer end of the first driving groove pushes the first driving rod, and the outer end of the second driving groove pushes the second driving rod, so that the main shaft rotates to the test angle, the unlocking rod and the unlocking groove do not act, and the interlocking rod and the interlocking groove do not act;

Move from the test position to the connection unclamped position, the sliding plate moves toward the inner side of the drawer device, the outer end of the first driving groove pushes the first driving rod until the first driving rod escapes from the first driving groove, and the outer end of the second driving groove pushes the second driving rod until the second driving rod escapes from the second driving groove, so that the main shaft rotates to the connection unclamped angle, the unlocking rod enters the unlocking groove but the unlocking rod and the unlocking groove do not interact, and the interlocking rod and the interlocking groove do not interact;

Move from the connection unclamped position to the connection clamped position, the sliding plate moves toward the inner side of the drawer device, the outer end of the unlocking groove pushes the unlocking rod to rotate the main shaft to the connection clamping angle, and the interlocking rod enters the interlocking groove but the interlocking rod and the interlocking groove do not interact.

2. The electrical switch device according to claim 1, characterized in that the circuit breaker body withdraws from the drawer device and passes through the connection clamping position, the connection unclamping position, the test position and the separation position in sequence;

In the connection clamping position, the main shaft is located at the connection clamping angle, the interlocking rod is located in the interlocking groove, the unlocking rod is located in the unlocking groove, the first driving rod and the first driving groove do not interact, and the second driving rod and the second driving groove do not interact;

Move from the connection clamping position to the connection unclamping position, the sliding plate moves toward the outside of the drawer device, the inner end of the interlocking groove pushes the interlocking rod until the interlocking rod escapes from the interlocking groove, so that the main shaft rotates to the connection unclamping angle, the unlocking rod is located in the unlocking groove but the unlocking rod and the unlocking groove do not interact, the first driving rod and the first driving groove do not interact, and the second driving rod and the second driving groove do not interact;

From the connection unclamped position to the test position, the sliding plate moves toward the outside of the drawer device, and the inner end of the unlocking groove pushes the unlocking rod, so that the main shaft rotates from the connection unclamped angle to the test angle, the first driving rod enters the first driving groove, the second driving rod enters the second driving groove, the inner end of the unlocking groove pushes the unlocking rod until the unlocking rod escapes from the unlocking groove, the inner end of the first driving groove continues to push the first driving rod, and the inner end of the second driving groove continues to push the second driving rod, so that the main shaft rotates to the test angle;

From the test position to the separation position, the sliding plate moves toward the outside of the drawer device, the inner end of the first drive groove pushes the first drive rod, and the inner end of the second drive groove pushes the second drive rod, so that the main shaft rotates to the separation angle, the first drive rod remains in the first drive groove, and the second drive rod remains in the second drive groove.

3. The electric switch device according to claim 1, characterized in that transmission gears are installed at both ends of the main shaft, the bottom of the support plate is circular and has transmission teeth, the transmission teeth are engaged with the transmission gears, and the rotation of the main shaft drives the support plate to rotate;

The inner wall of the support plate extends toward the top to form an interlocking plate, the inner end of the top of the support plate forms a driving groove, the outer end of the top of the support plate forms a connecting surface, and the top of the outer wall of the support plate is a convex angle to form an exit drive portion.

4. The electric switch device according to claim 2, characterized in that it further comprises a side slide plate, the side slide plate has an entry shaft pin and an exit shaft pin, the circuit breaker body is mounted on the side slide plate, the entry shaft pin is located on the inner side, and the exit shaft pin is located on the outer side, and the circuit breaker body enters the drawer device and passes through the separation position, the test position, the connection unclamped position and the connection clamped position in sequence;

In the separation position, the main shaft is located at the separation angle, the support plate is also located at the separation angle, the entry shaft pin of the side slide plate is located in the driving groove, and the circuit breaker body is located at the separation position;

Move from the separation position to the test position, the main shaft rotates from the separation angle to the test angle, driving the support plate to rotate from the separation angle to the test angle, and the outer end of the driving groove pushes the entry shaft pin of the side slide plate to drive the circuit breaker body to move from the separation position to the test position;

Move from the test position to the connection unclamped position, the main shaft rotates from the test angle to the connection unclamped angle, driving the support plate to rotate from the test angle to the connection unclamped angle, and the outer end of the driving groove pushes the entry shaft pin of the side slide until the entry shaft pin escapes from the driving groove and stays on the connection surface of the support plate, driving the circuit breaker body to move from the test position to the connection unclamped position;

Move from the unclamped connection position to the clamped connection position, the main shaft rotates from the unclamped connection angle to the clamped connection angle, driving the support plate to rotate from the unclamped connection angle to the clamped connection angle, the entry shaft pin slides on the connection surface of the support plate, the support plate and the entry shaft pin do not interact, and the circuit breaker body does not move.

5. The electrical switch device according to claim 4, characterized in that the circuit breaker body withdraws from the drawer device and passes through the connection clamping position, the connection unclamping position, the test position and the separation position in sequence;

In the connection clamping position, the spindle is located at the connection clamping angle, the support plate is located at the connection clamping angle, the entry shaft pin of the side slide is located on the connection surface of the support plate, and the exit shaft pin of the side slide does not contact the support plate;

Move from the connection clamping position to the connection unclamping position, the main shaft rotates from the connection clamping angle to the connection unclamping angle, driving the support plate to rotate from the connection clamping angle to the connection unclamping angle, the entry shaft pin slides on the connection surface of the support plate, the support plate and the entry shaft pin and the exit shaft pin are not in action, and the circuit breaker body does not move;

From the connection unclamped position to the test position, the main shaft rotates from the connection unclamped angle to the test angle, driving the support plate to rotate from the connection unclamped angle to the test angle, the exit drive portion of the support plate pushes the exit shaft pin, so that the circuit breaker body moves outward, and the entry shaft pin enters the drive groove from the connection surface of the support plate, the exit shaft pin is separated from the support plate, and the inner side end of the drive groove pushes the entry shaft pin, so that the circuit breaker body continues to move outward to the test position;

From the test position to the separation position, the main shaft rotates from the test angle to the separation angle, driving the support plate to rotate from the test angle to the separation angle, and the inner end of the driving groove pushes the shaft pin into place, so that the circuit breaker body moves outward to the separation position.

6. The electric switch device according to claim 1, characterized in that it also includes an interlocking mechanism, which cooperates with the tripping rod of the circuit breaker body to allow or prevent the circuit breaker body from closing, and the interlocking mechanism is installed on the drawer device, and the interlocking mechanism includes:

A drawer interlocking member, the drawer interlocking member is installed on the drawer device, the drawer interlocking member is close to the outer side of the drawer device, the outer side end and the inner side end of the drawer interlocking member form a protruding interlocking portion, and the middle of the drawer interlocking member forms a recessed release portion;

A drawer push rod, the drawer push rod is installed on the drawer device, the drawer push rod is located on the inner side of the drawer interlocking member, the middle part of the drawer push rod is rotatably connected to the drawer device through a rotating shaft, the top of the drawer push rod is a horizontal interlocking rod, the bottom of the drawer push rod is an inclined trigger rod, the drawer push rod has an interlocking position and a release position, the interlocking rod is pressed downward in the interlocking position, and the interlocking rod is lifted upward in the release position, the drawer push rod has a push rod spring, the spring force of the push rod spring causes the drawer push rod to rotate toward the release position;

The interlocking plate is formed by extending the inner side wall of the supporting plate toward the top.

7. The electrical switch device as claimed in claim 6, characterized in that a tripping rod is provided on the circuit breaker body, the circuit breaker body cannot be closed when the tripping rod is locked, and the circuit breaker body can be closed when the tripping rod is released, and the circuit breaker body enters the drawer device and passes through the separation position, the test position, the connection unclamped position and the connection clamped position in sequence;

In the separated position, the interlocking part at the outer end of the drawer interlock locks the tripping rod, and the circuit breaker body cannot be closed;

Move from the separation position to the test position, the circuit breaker body moves inward, the trip rod enters the recessed release portion in the middle of the drawer interlock, the trip rod is released, and the circuit breaker body can be closed;

Move from the test position to the connection unclamped position, the circuit breaker body moves inward, the trip rod escapes from the release portion of the drawer interlocking piece, and is locked by the interlocking portion at the inner end of the drawer interlocking piece, the circuit breaker body cannot be closed, the circuit breaker body continues to move inward, the interlocking plate rotates with the support plate and contacts the triggering rod of the drawer push rod, the drawer push rod rotates from the release position to the interlocking position, the trip rod is separated from the drawer interlocking piece but the trip rod continues to be locked by the interlocking rod of the drawer push rod, the circuit breaker body cannot be closed;

Move from the connection unclamped position to the connection clamped position, the circuit breaker body does not move, the interlocking plate rotates with the support plate and separates from the trigger rod of the drawer push rod, the drawer push rod rotates from the interlocking position to the release position under the action of the push rod spring, the interlocking rod of the drawer push rod releases the trip rod, and the circuit breaker body can be closed.

8. The electrical switch device according to claim 7, characterized in that the circuit breaker body withdraws from the drawer device and passes through the connection clamping position, the connection unclamping position, the test position and the separation position in sequence;

In the connection clamping position, the drawer push rod is in the release position under the action of the push rod spring, the trip rod is released, and the circuit breaker body can be closed;

Move from the connection clamping position to the connection unclamping position, the circuit breaker body does not move, the interlocking plate rotates with the support plate and contacts the trigger rod of the drawer push rod, the drawer push rod rotates from the release position to the interlocking position under the action of the interlocking plate, the interlocking rod of the drawer push rod locks the tripping rod, and the circuit breaker body cannot be closed;

From the connection unclamped position to the test position, the circuit breaker body moves outward, the tripping rod is separated from the interlocking rod of the drawer push rod but continues to be locked by the interlocking part at the inner end of the drawer interlocking part, and the circuit breaker body cannot be closed. The circuit breaker body moves to the test position, the tripping rod enters the recessed release part in the middle of the drawer interlocking part, the tripping rod is released, and the circuit breaker body can be closed;

From the test position to the separation position, the circuit breaker body moves outward, the trip rod escapes from the release portion of the drawer interlock, and is locked by the interlock portion at the outer end of the drawer interlock, so that the circuit breaker body cannot be closed.

9. The electric switch device according to claim 1, characterized in that the driving mechanism drives the locking mechanism so that the locking mechanism drives the clamping mechanism of the electric connection device, the electric connection device clamps or releases the busbar of the circuit breaker body, the locking mechanism is installed on the drawer device, and the locking mechanism comprises:

A locking gear, which is mounted on the drawer device and can rotate;

A locking transmission shaft, the locking transmission shaft is connected to the locking gear and the clamping mechanism of the electrical connection device, the locking gear rotates, and the clamping mechanism is driven by the locking transmission shaft to clamp or release the busbar of the circuit breaker body;

A locking rack, the locking rack is formed on the sliding plate, and the locking rack extends from the inner end of the sliding plate toward the outer side;

The sliding plate moves inward, the locking rack contacts and engages with the locking gear, driving the locking gear to rotate in the clamping direction, and the clamping mechanism clamps the busbar of the circuit breaker body;

The sliding plate moves outward, driving the locking gear to rotate in the loosening direction, the clamping mechanism loosens the busbar of the circuit breaker body, the sliding plate continues to move outward, and the locking rack is disengaged from the locking gear.

10. The electrical switch device according to claim 9, characterized in that the circuit breaker body enters the drawer device and passes through the separated position, the test position, the connected unclamped position and the connected clamped position in sequence;

In the separation position and the test position, the locking gear is disengaged from the locking rack;

Move from the test position to the connection unclamped position, the sliding plate and the circuit breaker body move inward, the busbar of the circuit breaker body gradually enters the electrical connection device, the locking rack contacts and engages with the locking gear, driving the locking gear to rotate in the clamping direction, and the clamping mechanism gradually clamps;

When moving from the connection unclamped position to the connection clamped position, the circuit breaker body does not move, the busbar of the circuit breaker body completely enters the electrical connection device, the sliding plate continues to move inward, the locking rack engages with the locking gear, driving the locking gear to continue to rotate in the clamping direction, and the clamping mechanism clamps the busbar of the circuit breaker body.

11. The electrical switch device according to claim 10, characterized in that the circuit breaker body withdraws from the drawer device and passes through the connection clamping position, the connection unclamping position, the test position and the separation position in sequence;

Move from the connection clamping position to the connection unclamping position, the circuit breaker body does not move, the sliding plate moves outward, the locking rack engages with the locking gear, driving the locking gear to rotate in the loosening direction, and the clamping mechanism loosens the busbar of the circuit breaker body;

From the connection unclamped position to the test position, the sliding plate and the circuit breaker body move outward, the busbar of the circuit breaker body gradually withdraws from the electrical connection device, the locking rack engages with the locking gear, driving the locking gear to continue to rotate in the loosening direction, the clamping mechanism continues to loosen, the sliding plate and the circuit breaker body move outward to the test position, the busbar of the circuit breaker body is separated from the electrical connection device, and the locking rack is disengaged from the locking gear;

From the test position to the separation position, the locking gear is disengaged from the locking rack.

12. The electrical switch device according to claim 9, characterized in that the circuit breaker body enters the drawer device and passes through the separated position, the test position, the connected unclamped position and the connected clamped position in sequence;

Move from the test position to the connection unclamped position, the sliding plate and the circuit breaker body move inward, the busbar of the circuit breaker body gradually enters the electrical connection device, and the locking rack is disengaged from the locking gear;

When moving from the connection unclamped position to the connection clamped position, the circuit breaker body does not move, the busbar of the circuit breaker body completely enters the electrical connection device, the sliding plate continues to move inward, the locking rack contacts and engages with the locking gear, driving the locking gear to rotate in the clamping direction, and the clamping mechanism clamps the busbar of the circuit breaker body.

13. The electrical switch device according to claim 12, characterized in that the circuit breaker body withdraws from the drawer device and passes through the connection clamping position, the connection unclamping position, the test position and the separation position in sequence;

Move from the connection clamping position to the connection unclamping position, the circuit breaker body does not move, the sliding plate moves outward, the locking rack engages with the locking gear, driving the locking gear to rotate in the loosening direction, the clamping mechanism releases the busbar of the circuit breaker body, the sliding plate moves outward to the connection unclamping position, and the locking rack disengages from the locking gear;

From the connection unclamped position to the test position, the sliding plate and the circuit breaker body move outward, the busbar of the circuit breaker body gradually withdraws from the electrical connection device, and the locking rack is disengaged from the locking gear;